JavaScript Alphabet Pattern 26

Posted in JavaScript Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 100 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

JavaScript Alphabet Pattern 26

Here`s a program that prints the above alphabet pattern using JavaScript Programming:

example.html

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<!DOCTYPE html>
<html>
<body>

<script>
var i, j, k;
for(i=65; i<=69; i++)
{
 for(j=i; j<=69; j++)
  document.write(String.fromCharCode(j));
 for(k=i; k>65; k--)
  document.write(String.fromCharCode(k-1));
 document.write("<br>");
}
</script>
</body>
</html>

💻 Testing the Program

When you run the above program, it will print the following output:

Output

ABCDE
BCDEA
CDEBA
DECBA
EDCBA

🧠 How the Program Works

Let's break down the logic behind the code:

var i, j, k;: This declares three variables i, j, and k to be used in the loops.
for(i=65; i<=69; i++): This is the outer loop that runs from i = 65 (ASCII code for 'A') to i = 69 (ASCII code for 'E'). Each iteration of this loop corresponds to a row in the output pattern.
for(j=i; j<=69; j++): This is the first inner loop that runs from the current value of i to 69 (ASCII code for 'E'). This loop is responsible for printing characters in increasing order.
document.write(String.fromCharCode(j));: This line inside the first inner loop writes the character represented by the ASCII value j to the output. It effectively prints characters in the range from the current value of i to 'E'.
for(k=i; k>65; k--): This is the second inner loop that runs from the current value of i to 66 (ASCII code for 'B'), decrementing the value of k in each iteration. This loop is responsible for printing characters in decreasing order.
document.write(String.fromCharCode(k-1));: This line inside the second inner loop writes the character represented by the ASCII value k-1 to the output. It effectively prints characters in the range from the current value of i (excluding 'A') down to 'B'.
document.write("<br>");: This line adds an HTML line break after both inner loops complete, causing the next row of characters to be written on a new line.

💯 Tips for Enhancement:

Explore the versatility of this pattern by adjusting its parameters. Whether you increase or decrease the size, tweak the spacing, or modify the characters used, each change opens up a world of possibilities, allowing you to customize and create your unique visual effects.

✔ Conclusion:

Creating visually appealing patterns is not only a fun endeavour but also a great way to enhance your programming or design skills. We hope this tutorial has inspired you to explore the world of creative coding. Share your creations with us, and let your imagination run wild!

🤗 Closing Call-to-Action:

We'd love to see your unique interpretations of the alphabet pattern. Share your creations in the comments below, and don't hesitate to reach out if you have any questions or suggestions for future tutorials. Happy coding!